| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.7 | 29.8 | 41.6 | 58.0 | 71.9 | 78.8 | 83.8 | 80.9 | 72.0 | 59.9 | 42.4 | 27.6 | 55.9 |
| Highest Mean Max. Temperature (F) | 33.0 | 38.6 | 53.0 | 66.5 | 81.4 | 83.6 | 89.3 | 86.0 | 78.1 | 71.5 | 50.8 | 36.9 | 57.9 |
| Year Highest Occurred | 1990 | 1976 | 1968 | 1977 | 1977 | 1988 | 1983 | 1969 | 1978 | 1963 | 1963 | 1979 | 1964 |
| Lowest Mean Max. Temperature (F) | 13.6 | 19.6 | 32.6 | 49.3 | 66.0 | 70.8 | 79.7 | 76.3 | 65.5 | 52.0 | 34.6 | 16.3 | 51.8 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1973 | 1969 | 1971 | 1986 | 1965 | 1987 | 1985 | 1989 | 1989 |
| Mean Temperature (F) | 13.0 | 18.3 | 30.7 | 45.6 | 58.1 | 65.8 | 71.0 | 68.3 | 60.0 | 48.9 | 34.0 | 18.7 | 44.4 |
| Highest Mean Temperature (F) | 23.4 | 28.7 | 39.9 | 52.3 | 66.5 | 70.3 | 74.8 | 72.7 | 65.8 | 58.5 | 41.3 | 27.7 | 47.2 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.3 | 8.7 | 21.6 | 39.1 | 51.8 | 59.2 | 67.5 | 64.7 | 55.4 | 42.2 | 26.6 | 6.5 | 41.0 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1988 | 1976 | 1989 | 1989 |
| Mean Min. Temperature (F) | 2.2 | 6.6 | 19.8 | 33.2 | 44.3 | 52.9 | 58.1 | 55.6 | 47.9 | 37.8 | 25.6 | 9.7 | 32.8 |
| Highest Mean Min. Temperature (F) | 13.8 | 22.2 | 30.7 | 38.0 | 51.5 | 57.8 | 62.3 | 60.6 | 53.5 | 45.8 | 31.7 | 20.9 | 36.8 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1977 | 1977 | 1984 | 1987 | 1984 | 1978 | 1971 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -9.0 | -2.8 | 10.5 | 28.8 | 37.2 | 47.5 | 54.4 | 50.5 | 42.5 | 31.5 | 15.5 | -3.5 | 30.1 |
| Year Lowest Occurred | 1977 | 1967 | 1965 | 1975 | 1967 | 1969 | 1962 | 1967 | 1974 | 1976 | 1976 | 1983 | 1989 |
| Mean Precipitation (in.) | 1.00 | 0.78 | 1.71 | 2.71 | 3.65 | 4.46 | 3.72 | 4.48 | 4.44 | 2.52 | 1.80 | 1.22 | 32.49 |
| Highest Precipitation (in.) | 4.16 | 2.60 | 4.58 | 6.10 | 8.26 | 11.05 | 9.00 | 7.94 | 10.13 | 5.54 | 5.54 | 2.99 | 48.04 |
| Year Highest Occurred | 1967 | 1981 | 1977 | 1975 | 1973 | 1968 | 1987 | 1975 | 1964 | 1979 | 1975 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.03 | 0.01 | 0.15 | 0.29 | 1.14 | 1.92 | 1.42 | 0.78 | 0.77 | 0.59 | 0.07 | 0.09 | 17.63 |
| Year Lowest Occurred | 1985 | 1969 | 1978 | 1987 | 1976 | 1987 | 1974 | 1976 | 1976 | 1976 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1612. | 1308. | 1063. | 582. | 252. | 65. | 9. | 29. | 164. | 499. | 930. | 1435. | 7948. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 39. | 89. | 195. | 132. | 14. | 0. | 0. | 0. | 469. |